Appendix: National Value Added Look Up (valu) Table Database for gsurrgo Soil Data

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1 Appendix: National Value Added Look Up (valu) Table Database for gsurrgo Soil Data 1 VALU Table Theme VALU Table Column Name _ short VALU Table Column Name _ long VALU Table Column Name Short Description 2 Map unit identifier mukey mukey Map unit key is the unique identifier of a record in the Mapunit table. Use this column to join the Component table to the Mapunit table. 3 (mm) aws0_5 aws_0_5 Available water storage estimate (AWS) in standard layer 1 or standard zone 1 (0 5 cm depth), expressed in mm. The volume of plant available water that the soil can store in this layer based on all map unit components (weighted average). NULL values are presented where data are incomplete or not 4 (mm) aws5_20 aws_5_20 Available water storage estimate (AWS) in standard layer 2 (5 20 cm soil can store in this layer based on all map unit components (weighted 5 (mm) aws20_50 aws_20_50 Available water storage estimate (AWS) in standard layer 3 (20 50 cm soil can store in this layer based on all map unit components (weighted 6 (mm) aws50_100 aws_50_100 Available water storage estimate (AWS) in standard layer 4 ( cm soil can store in this layer based on all map unit components (weighted 7 (mm) aws100_150 aws_100_150 Available water storage estimate (AWS) in standard layer 5 ( cm soil can store in this layer based on all map unit components (weighted

2 8 (mm) aws150_999 aws_150_999 Available water storage estimate (AWS) in standard layer 6 (150 cm to the reported depth of the soil profile), expressed in mm. The volume of plant available water that the soil can store in this layer based on all map unit components (weighted average). NULL values are presented where data are incomplete or not 9 (mm) aws0_20 aws_0_20 Available water storage estimate (AWS) in standard zone 2 (0 20 cm soil can store in this zone based on all map unit components (weighted 10 (mm) aws0_30 aws_0_30 Available water storage estimate (AWS) in standard zone 3 (0 30 cm soil can store in this zone based on all map unit components (weighted 11 (mm) aws0_100 aws_0_100 Available water storage estimate (AWS) in standard zone 4 (0 100 cm soil can store in this zone based on all map unit components (weighted 12 (mm) aws0_150 aws_0_150 Available water storage estimate (AWS) in standard zone 5 (0 150 cm soil can store in this zone based on all map unit components (weighted 13 (mm) aws0_999 aws_0_999 Available water storage estimate (AWS) in total soil profile (0 cm to the reported depth of the soil profile), expressed in mm. The volume of plant available water that the soil can store in this layer based on all map unit components (weighted average). NULL values are presented where data are incomplete or not 14 tk0_5a thick_0_5_aws Thickness of soil components used in standard layer 1 or standard zone 1 (0 5 cm) expressed in cm (weighted average) for the available water storage. NULL values are presented where data are incomplete or not

3 15 tk5_20a thick_5_20_aws Thickness of soil components used in standard layer 2 (5 20 cm) 16 tk20_50a thick_20_50_aws Thickness of soil components used in standard layer 3 (20 50 cm) 17 tk50_100a thick_50_100_aw s Thickness of soil components used in standard layer 4 ( cm) 18 tk100_150a thick_100_150_a ws Thickness of soil components used in standard layer 5 ( cm) 19 tk150_999a thick_150_999_a ws Thickness of soil components used in standard layer 6 (150 cm to the reported depth of the soil profile) expressed in cm (weighted average) for the available water storage. NULL values are presented where data are incomplete or not 20 tk0_20a thick_0_20_aws Thickness of soil components used in standard zone 2 (0 20 cm) 21 tk0_30a thick_0_30_aws Thickness of soil components used in standard zone 3 (0 30 cm) 22 tk0_100a thick_0_100_aws Thickness of soil components used in standard zone 4 (0 100 cm) 23 tk0_150a thick_0_150_aws Thickness of soil components used in standard zone 5 (0 150 cm)

4 24 tk0_999a thick_0_999_aws Thickness of soil components used in total soil profile (0 cm to the reported depth of the soil profile) expressed in cm (weighted average) for the available water storage. NULL values are presented where data are incomplete or not 25 Map Unit summed component percentage (representative value) for Available Water Storage s (metadata) musumcpcta mu_sum_comppc t_r_aws The sum of the comppct_r (SSURGO component table) values used in the available water storage for the map unit. Useful metadata information. NULL values are presented where data are incomplete or not 26 soc0_5 soc_0_5 Soil organic carbon stock estimate (SOC) in standard layer 1 or standard zone 1 (0 5 cm depth). The concentration of organic carbon present in the soil expressed in grams C per square meter to a depth of 5 cm. NULL values are presented where data are incomplete or not 27 soc5_20 soc_5_20 Soil organic carbon stock estimate (SOC) in standard layer 2 (5 20 cm in grams C per square meter for the 5 20 cm layer. NULL values are presented where data are incomplete or not 28 soc20_50 soc_20_50 Soil organic carbon stock estimate (SOC) in standard layer 3 (20 50 cm in grams C per square meter for the cm layer. NULL values are presented where data are incomplete or not 29 soc50_100 soc_50_100 Soil organic carbon stock estimate (SOC) in standard layer 4 ( cm in grams C per square meter for the cm layer. NULL values are presented where data are incomplete or not 30 soc100_150 soc_100_150 Soil organic carbon stock estimate (SOC) in standard layer 5 ( cm in grams C per square meter for the cm layer. NULL values are presented where data are incomplete or not

5 31 soc150_999 soc_150_999 Soil organic carbon stock estimate (SOC) in standard layer 6 (150 cm to the reported depth of the soil profile). The concentration of organic carbon present in the soil expressed in grams C per square meter for the 150 cm and greater depth layer. NULL values are presented where data are incomplete or not 32 soc0_20 soc_0_20 Soil organic carbon stock estimate (SOC) in standard zone 2 (0 20 cm in grams C per square meter to a depth of 20 cm. NULL values are presented where data are incomplete or not 33 soc0_30 soc_0_30 Soil organic carbon stock estimate (SOC) in standard zone 3 (0 30 cm in grams C per square meter to a depth of 30 cm. NULL values are presented where data are incomplete or not 34 soc0_100 soc_0_100 Soil organic carbon stock estimate (SOC) in standard zone 4 (0 100 cm in grams C per square meter to a depth of 100 cm. NULL values are presented where data are incomplete or not 35 soc0_150 soc_0_150 Soil organic carbon stock estimate (SOC) in standard zone 5 (0 150 cm in grams C per square meter to a depth of 150 cm. NULL values are presented where data are incomplete or not 36 soc0_999 soc_0_999 Soil organic carbon stock estimate (SOC) in total soil profile (0 cm to the reported depth of the soil profile). The concentration of organic carbon present in the soil expressed in grams C per square meter for the total reported soil profile depth. NULL values are presented where data are incomplete or not 37 Soil tk0_5s thick_0_5_soc Thickness of soil components used in standard layer 1 or standard zone 1 (0 5 cm)

6 38 Soil tk5_20s thick_5_20_soc Thickness of soil components used in standard layer 2 (5 20 cm) 39 Soil tk20_50s thick_20_50_soc Thickness of soil components used in standard layer 3 (20 50 cm) 40 Soil tk50_100s thick_50_100_soc Thickness of soil components used in standard layer 4 ( cm) 41 Soil tk100_150s thick_100_150_so c Thickness of soil components used in standard layer 5 ( cm) 42 Soil tk150_999s thick_150_999_so c Thickness of soil components used in standard layer 6 (150 cm to the reported depth of the soil profile) expressed in cm (weighted average) for the Soil. NULL values are presented where data are incomplete or not 43 Soil tk0_20s thick_0_20_soc Thickness of soil components used in standard zone 2 (0 20 cm) 44 Soil tk0_30s thick_0_30_soc Thickness of soil components used in standard zone 3 (0 30 cm) 45 Soil tk0_100s thick_0_100_soc Thickness of soil components used in standard zone 4 (0 100 cm) 46 Soil tk0_150s thick_0_150_soc Thickness of soil components used in standard zone 5 (0 150 cm)

7 47 Soil tk0_999s thick_0_999_soc Thickness of soil components used in total soil profile (0 cm to the reported depth of the soil profile) expressed in cm (weighted average) for the Soil. NULL values are presented where data are incomplete or not 48 Map Unit summed component percentage (representative value) for Soil Organic Carbon s (metadata) musumcpcts mu_sum_comppc t_r_soc The sum of the comppct_r (SSURGO component table) values used in the soil organic carbon for the map unit. Useful metadata information. NULL values are presented where data are incomplete or not 49 Productivity Index CORN and SOYBEANS nccpi2cs nccpi2_corn_soyb eans Productivity Index for Corn and Soybeans (weighted average) for major earthy components. Values range from.01 (low productivity) to.99 (high productivity). Earthy components are those soil series or higher level taxa components that can support crop growth (Dobos et al., 2012). Major components are those soil components where the majorcompflag = 'Yes' (SSURGO component table). NULL values are presented where data are incomplete or not Productivity Index for Small Grains (weighted average) for major earthy components. Values range from.01 (low productivity) to.99 (high productivity). 50 Productivity Index SMALL GRAINS nccpi2sg nccpi2_small_grai ns Earthy components are those soil series or higher level taxa components that can support crop growth (Dobos et al., 2012). Major components are those soil components where the majorcompflag = 'Yes' (SSURGO component table). NULL values are presented where data are incomplete or not 51 Productivity Index COTTON nccpi2co nccpi2_cotton Productivity Index for Cotton (weighted average) for major earthy components. Values range from.01 (low productivity) to.99 (high productivity). Earthy components are those soil series or higher level taxa components that can support crop growth (Dobos et al., 2012). Major components are those soil components where the majorcompflag = 'Yes' (SSURGO component table). NULL values are presented where data are incomplete or not

8 52 Productivity Index OVERALL nccpi2all nccpi2_overall Productivity Index that has the highest value among Corn and Soybeans, Small Grains, or Cotton (weighted average) for major earthy components. Values range from.01 (low productivity) to.99 (high productivity). Earthy components are those soil series or higher level taxa components that can support crop growth (Dobos et al., 2012). Major components are those soil components where the majorcompflag = 'Yes' (SSURGO component table). NULL values are presented where data are incomplete or not 53 Productivity Index map unit percent earthy major components (metadata) pctearthmc mapunit_percent _earthy_mc The Productivity Index map unit percent earthy is the map unit summed comppct_r for major earthy components. Earthy components are those soil series or higher level taxa components that can support crop growth (Dobos et al., 2012). Major components are those soil components where the majorcompflag = 'Yes' (SSURGO component table). Useful metadata information. NULL values are presented where data are incomplete or not 54 Root Zone Depth (cm) earthy major components rootznemc root_zone_cc_de pth_earthy_mc Root zone depth is the depth within the soil profile that commodity crop (cc) roots can effectively extract water and nutrients for growth. Root zone depth influences soil productivity significantly. Soil component horizon criteria for root limiting depth include: presence of hard bedrock, soft bedrock, a fragipan, a duripan, sulfuric material, a dense layer, a layer having a ph of less than 3.5, or a layer having an electrical conductivity of more than 12 within the component soil profile. If no root restricting zone is identified, a depth of 150 cm is used to approximate the root zone depth (Dobos et al., 2012). Root zone depth is computed for all map unit major earthy components (weighted average). Earthy components are those soil series or higher level taxa components that can support crop growth (Dobos et al., 2012). Major components are those soil components where the majorcompflag = 'Yes' (SSURGO component table). NULL values are presented where data are incomplete or not

9 55 Root Zone Available Water Storage (mm) earthy major components rootznaws root_zone_cc_aw s_earthy_mc Root zone (commodity crop) available water storage estimate (RZAWS), expressed in mm, is the volume of plant available water that the soil can store within the root zone based on all map unit earthy major components (weighted average). Earthy components are those soil series or higher level taxa components that can support crop growth (Dobos et al., 2012). Major components are those soil components where the majorcompflag = 'Yes' (SSURGO component table). NULL values are presented where data are incomplete or not 56 Droughty Soil Landscapes earthy major components droughty drought_vulnerab le_soil_landscape s Drought vulnerable soil landscapes comprise those map units that have available water storage within the root zone for commodity crops that is less than or equal to 6 inches (152 mm) expressed as "1" for a drought vulnerable soil landscape map unit or "0" for a non droughty soil landscape map unit or NULL for miscellaneous areas (includes water bodies). It is computed as a weighted average for major earthy components. Earthy components are those soil series or higher level taxa components that can support crop growth (Dobos et al., 2012). Major components are those soil components where the majorcompflag = 'Yes' (SSURGO component table). NULL values are presented where data are incomplete or not 57 Potential Wetland Soil Landscapes pwsl1pomu pwsl1_percent_of _mapunit "Potential Wetland Soil Landscapes" (PWSL) is expressed as the percentage of the map unit that meets the PWSL criteria. The hydric rating (soil component variable hydricrating ) is an indicator of wet soils. For version 1 (pwsl1), those soil components that meet the following criteria are tagged as PWSL and their comppct_r values are summed for each map unit. Soil components with hydricrating = 'YES' are considered PWSL. Soil components with hydricrating = NO are not PWSL. Soil components with hydricrating = 'UNRANKED' are tested using other attributes, and will be considered PWSL if any of the following conditions are met: drainagecl = 'Poorly drained' or 'Very poorly drained' or the localphase or the otherph data fields contain any of the phrases "drained" or "undrained" or "channeled" or "protected" or "ponded" or "flooded". If these criteria do not determine the PWSL for a component and hydricrating = 'UNRANKED', then the map unit will be classified as PWSL if the map unit name contains any of the phrases "drained" or "undrained" or "channeled" or "protected" or "ponded" or "flooded". For version 1 (pwsl1), waterbodies are identified as "999" when map unit names match a list of terms that identify water or intermittent water or map units have a sum of the comppct_r for "Water" that is 80% or greater. NULL values are presented where data are incomplete or not

10 58 Map Unit summed component percentage (representative value) (metadata) musumcpct mu_sum_comppc t_r The sum of the comppct_r (SSURGO component table) values for all listed components in the map unit. Useful metadata information. NULL values are presented where data are incomplete or not 59 1Dobos, R. R., H. R. Sinclair, Jr, and M. P. Robotham Productivity Index (NCCPI) User Guide, Version 2. USDA NRCS. Available at: ftp://ftpfc.sc.egov.usda.gov/nssc/ncc PI/NCCPI_user_guide.pdf.

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